I also presume the anti-jitter works in the same way, as the image moves
about the CCD, move the scanned 'window' to follow it.

There are three styles of anti-jitter systems:

[1] Examine the image, frame-by-frame, and judge whether the camera
    is moving based upon the image; move the image around electronic-
    ally based on that.

[2] Use a gyroscopic sensor to detect camera motion, and move the image
    around electronically based on that.

[3] Use a gyroscopic sensor to detect camera motion, and move the image
    around optically using moveable mirrors based on that.

In addition, there's a method which was (probably still is) used on
some professional movie cameras:

[*] Have the camera mechanism "floating" in a gimballed subsystem within
    the device the user holds, so that small changes of angle on the
    handgrips won't change the angle of the camera.

Of the common choices for camcorders, [3] is the most expensive, but it
avoids some of the motion-blur problems that can result from [2].  [1]
avoids mechanical sensors, but detecting what motion is real isn't always
easy or reliable.